Paper feeding suppression mechanism for calculating machines



July 30, 1957 N. R. FRIEBERG 2,801,048

PAPER FEEDING SUPPRESSION MECHANISM FOR CALCULATING MACHINES Filed May18, 1954 3 Sheets-Sheet 1 INVENTOR NELSON R. FRIEBERG July 30, 1957 N.R. FRIEBERG 2,801,048

PAPER FEEDING SUPPRESSION MECHANISM FOR CALCULATING MACHINES Filed May18. 1954 s Sheets-Sheet 2 July 30, 1957 FRlEBERG 2,801,048 PAPER FEEDINGSUPPRESSION MECHANISM FOR CALCULATING MACHINES Filed May 18, 1954 v 3Sheets-Sheet 3 INVENTQR NELSON R. FRIEBERG BY Wjfifi HIS ATTORNEYSUnited States Patent PAPER FEEDING SUPPRESSION MECHANISM FOR CALCULATINGMACHINES Nelson R. Frieberg, Ithaca, N. Y., assignor to The NationalCash Register Company, Dayton, Ohio, a corporation of MarylandApplication May 18, 1954, Serial No. 430,482

1 Claim. (Cl. 235-6051) This invention relates to a paper feeding devicefor a calculating machine and particularly pertains to means to suppressa paper feed on the first cycle of a two-cycle total-taking orsub-total-taking operation in a machine that normally feeds recordmaterial one space each ma- :chine cycle.

The machine in which this mechanism is shown embodied is of the typedisclosed. in the application for United States Letters Patent SerialNo. 412,302, filed by this applicant, Nelson R. Frieberg, and Oscar F.Larsen on February 24, 1954.

It is an object of this invention to provide, in a calculating machinehaving single-cycle item-entry operations, two-cycle total-takingoperations, and mechanism for feeding paper one space on each cycle ofoperation, mechanism whereby the paper-feeding mechanism is suppressedon the first cycle of a total-taking operation, so that the printedtotal will appear one space beneath the last printed item entry insteadof two spaces therefrom.

With this and incidental objects in view, the invention includes certainnovel features of construction and combinations of parts, a preferredform or embodiment of which is hereinafter described with reference tothe drawings which accompany and form a part of this specification.

Of the drawings:

Fig. 1 isa view of the right side mechanism of the machine with thecarriage removed.

Fig. 2 is a right end elevation of the paper carriage, showing thepaper-feeding mechanism.

Fig. 3 is a detail of the paper feedbail and pawls.

Fig. 4 is a perspective of part of the mechanism of Figs. 2 and 3.

Fig. 5 is a rear elevation of the paper feed suppressing mechanism.

Fig. 6 is a right side elevation of the total-taking control linkagewhich disables the suppressing mechanism of Fig. 5.

In the machine of the type shown in the beforementioned Frieberg et'al.application, the rear drive shaft 20 (Fig. 1) rocks firstcounter-clockwise and then clockwise during a machine cycle ofoperation. On this drive shaft 20 is an arm 21 (see also Figs. 2 and 4),having a stud 22, which normally rests against the end of an arm 23 of abracket formed by the arm 23 and an arm 24, pivoted on a pin 25,supported in a rearwardly-extending portion 26 of the machine. The freeend of the arm 24 is bent over and bolted to the arm 23 to form abearing surface 27, on which is mounted a roller 28, which bears againstthe forward surface of a paper feed bail 29 supported by an arm 30pivoted by a screw stud 31 to the right frame plate 32 of the papercarriage. The left end of the feed bail is supported in a similarmanner. A spring 33, wound around the stud 31, has one end restingagainst a stud on the frame plate 32 and its other end resting on thearm 30, so as to urge the feed bail to rock toward the roller 28. Whenthe machine is at rest, the parts are positioned as shown in Fig. 2,with the stud 22 holding the arm Patented July 30, 1957 23 and, throughthe roller 28, the bail 29 rocked in a counter-clockwise direction. Asthe machine goes through a cycle of operation, the stud 22 moves awayfrom the arm 23, allowing the feed bail to rock first clockwise and thencounter-clockwise around the center of the stud 31.

Pivoted to the upper end of the arm 30 is a platen feed pawl 34 (Figs. 3and 4) having a tooth 35 adapted to cooperate with a ratchet wheel 36secured to a platen support shaft 37. Rocking of the feed bail will turnthe platen a step, the distance being controlled by the position of alever 38, which, through a cam edge 39, controls the timing of theengagement of the pawl 34 with the wheel 36.

The paper carriage is formed of the right side plate 32 (Fig. 2), asimilar left side plate, and various cross bars and shafts, and ismounted for cross-tabulating movement by bearings on a support member 40and another support, not shown. By the construction shown, which isdisclosed in more detail in the Frieberg et a1. application to whichreference has been made, the feed bail 29 is rocked, unless prevented,on each machine operation, regardless of the lateral position of thecarriage.

Pivoted on a stud 41 (Fig. 5) on a back frame piece 42 of the machine isa lever 43, normally held in the position shown by a spring 44, wherethe upper end engages a notch 45 in the arm 23. If this conditionprevails during a cycle of machine operation, the paper-holding platenwill not be given the feeding movement.

During item-entering single-cycle operations of the machine, the lever43 is rocked counter-clockwise, as shown in Fig. 5, unblocking theplaten feed bail, by means next to be described.

Referring to Fig. 1, as before stated, the shaft 20 rocks firstcounter-clockwise and then clockwise during a machine cycle. A plate 46,attached thereto, rocks likewise, pushing a link 47, pivoted thereto,first to the left and then to the right as seen in Fig. l. The forwardend of the link 47 is pivoted to a plate 48 secured to a cross shaft 49,which, also, is rocked first counter-clockwise and then clockwise duringthe cycle. Pivoted to the right side frame plate 50 is a lever 51 havinga downwardlyand rearwardly-extending leg 52 bearing against a stud 53 onan arm 54 secured to a hub 55 (see also Fig. 5) pivoted on the rightframe plate 50. The lever 51 (Fig. 1) is urged counter-clockwise on itspivot 57 by a spring 56 but is retained in the position shown by a stud58 on the link 47. As the link 47 moves to the left, as seen in Fig. l,at the commencement of an item-entering machine cycle, the lever 51rocks counter-clockwise until its nose 59 comes to rest in a notch 60 ina total slide 61, mounted for downward and rearward movement on studs 62and 63. Thus the total slide is latched during item-entering cycles ofoperation in the position shown in Fig. 1. As the lever 51 rockscounter-clockwise, the leg 52 rocks the arm 54 clockwise. An arm 64,attached to the hub 55 (Fig. 5), has its rear end positioned in the fork65 in the arm 66 of a bell crank lever 67, pivoted to the frame piece42. The other arm 68 of the bell crank lever 67 has pivoted thereto alink 69, the other end of which has a slot 70, in which rides a stud 71.secured on the lever 43. The clockwise movement of the arm 64 (Fig. 1)rocks the lever 67 (Fig. 5) counter-clockwise, consequently rocking thelever 43 counter-clockwise to a position where it does not block the arm23 (Fig. 4). Thus the feed bail 29 moves in a paper-feeding movement oneach item-entering machine cycle.

As mentioned before, the total-taking and sub-totaltaking operations aretwo-cycle operations. Such are initiated by keys, not shown here butshown in the Frieberg et a1. application before mentioned. A total key,when operated, bears down on a stud 72 on the total slide 61, moving itdownwardly and rearwardly to a point where the nose 59 cannot move intothe notch 60 but hits the rear edge of the total slide, such movementnot being sufiicient to move the arms 54 and 64 a sufiicient distance tomove the lever 43 (Fig. out of blocking position. The sub-total key,when operated, bears down on a stud 73 on a sub-total slide 74, movingit downwardly and rearwardly, carrying the total slide 61 with it, withthe same result on lever 51. The total slide stud 72 extends into a slot75 of the sub-total slide to couple the two slides together in sub-totalslide movements.

Unless something else were provided, there would be no paper feed ineither cycle of a total-taking operation or a sub-total-takingoperation. To overcome this situation, advantage is taken of themovement of the link that controls the totalizer-engaging mechanism,which occurs in the last half of the first cycle and which persistsduring the paper-feeding time in the second cycle. Through means, notnecessary to describe here but shown in the mentioned Frieberg et al.application, a slide 76 (Fig. 6) is moved first to the left and then tothe right each machine cycle. Pivoted to its front end is a latch 77,normally held ineffective, as shown in Fig. 6. In total-taking andsub-total-taking operations, a bell crank lever 78, pivoted to themachine frame, is rocked counter-clockwise at the initiation of thefirst cycle, allowing the latch 77 to drop to where it rests on the topedge of a total link 80, which has a notch 81 thereon. At mid-cycle, theslide 76 has moved completely forward, and an ear 82 on the latch 77,carried thereby, has dropped into the notch 81 under the urge of aspring 83, and, on return movement of the slide 76 in the last half ofthe first machine cycle, the total link 80 is moved to the right. Thetotal link 80 is pivoted to a swinging support 84 at its front end andis pivoted to a total bell crank lever 85, pivoted to the right frame,at its rear end. The movement of the link 80 rocks the bell crank levercounter-clockwise as seen in Fig. 6, lifting up on a link 86, pivoted toits upper end. The link 86 is resiliently coupled, by pins 87 and 88,slots 89 and 90, and a spring 91, to a link 92, pivoted to an arm 93,pinned to a shaft 94, journaled in the machine frame. The shaft 94 isrocked counter-clockwise as seen in Figs. 1 and 6. Pinned to the shaft94 is an arm 95 (see also Fig. 5), to which is pivoted a link 96, havingin its lower end a slot 97 (Fig. 1), in which rides the stud 53 of thearm 54. Thus the rocking of the shaft 94 rocks the arm 54 in the samemanner as the leg 52. This occurs in the last half of the first cycle ofthe two-cycle operations, and the rocked condition persists until afterthe feeding movement of the feed bail 29 in the second cycle.

Thus, there is but one feeding movement of the platen duringtotal-taking and sub-total-taking operations, even though each type is atwo-cycle operation.

While the form of mechanism shown and described herein is admirablyadapted to fulfill the objects primarily stated, it is to be understoodthat it is not intended to confine the invention to the one form orembodiment disclosed herein, for it is susceptible of embodiment invarious other forms.

What is claimed is:

In a machine of the class described having a cyclicallyoperable mainoperating means which performs one cycle of operation on item-enteringoperations and two cycles of operation on total-taking orsub-total-taking operations, the combination therewith of recordmaterial feed means spring-urged in a feeding direction but normallyheld in a home position while the machine is at rest; blocking meansnormally blocking the feed means from movement, said feed means making afeeding excursion once each machine cycle if the blocking means has beenmoved to ineffective position at the commencement of a machine cycle;control means operable to move the blocking means; a lever urged to movefrom a home position but held there by the main operating means whilethe machine is at rest, said lever being permitted to move to a fullextent during the first half of an item-entering machine cycle butreturned to home position at the close of a machine cycle, and saidlever, when moved to its full extent, operating the control means tomove the blocking means to ineffective position; a total control meanswhich is moved to initiate a total-taking or a sub-total-takingtwo-cycle operation, said total control means, when moved, preventingthe lever from moving its full extent, so that it will not operate thecontrol means; and means operated by the main operating mechanism intwo-cycle operations to move the control means after the time foroperation of the feed means in the first cycle, so that the feed meanswill make a feeding excursion during the second cycle of a two-cycleoperation, whereby the record material will be fed once only ontwo-cycle machine operations.

References Cited in the file of this patent UNITED STATES PATENTS2,441,870 Christian May 18, 1948 2,468,341 Mueller et al Apr. 26, 1949FOREIGN PATENTS 205,870 Great Britain Oct. 24, 1923

